【High Visibility】The brightly colored swim buoy bag floats behind you, ensuring visibility from boats, fishing vessels, jet skis, paddle boats, canoes, kayaks, lifeguards, parents, friends, and companions, thus avoiding potential dangers. The eye-catching color can also deter dangerous marine animals, allowing you to safely float and rest while swimming. 【Waterproof and Storage】The bag has a waterproof structure, allowing you to store items such as towels, keys, mobile phones, smartphones, small LED lights, and glasses inside. 【Safe Double Airbags】With dual valves and a double airbag system, you can still float with one inflated even if the other deflates; it also comes with an adjustable and removable buckle belt. 【Wide Range of Uses】It can be used for various water sports! It can also be used as a safety float for open water swimmers, triathlons, and snorkeling, and can be used for swimming training as you can easily float by holding onto it when you get tired of swimming.